I am using zoomcharts NetCharts to display the netchart legends. I see that nodeClasses seem to be working fine, but not linkClasses (I don't see the link being displayed under the Legend section)? The source code for testing it out is here: https://zoomcharts.com/developers/en/net-chart/examples/legend/net-chart-legend.html
Using latest Zoomcharts version, on latest Chrome browser.
This has been fixed in the upcoming version 1.9.
For now you can use the nightly build which includes the fix: https://cdn.zoomcharts-cloud.com/1/nightly/zoomcharts.js